Kinetic Phosphorescence Analyzers for trace level detection of Uranium & Lanthanides
KPA-11 URANIUM ANALYZER SPECIFICATION
MEASUREMENT TECHNIQUE: TIME-RESOLVED KINETIC PHOSPHORESCENCE ANALYSIS
LOWER LIMIT OF DETECTION: 0.01 µg/L
ANALYTICAL RANGE: 0.01 µg/L to 5.0 mg/L
RELATIVE STANDARD DEVIATION

Typically 2-3% above 0.1 µg/L & 7-10% below 0.1 µg/L
EXCITATION SOURCE: Dye laser pumped by nitrogen laser
 
  NITROGEN   DYE
PEAK POWER 45 kW  13.3 at 500 nm
AVERAGE POWER 3.4 mW 1.8 at 500 nm
PULSE WIDTH, FWHM <3.5ns <3.5
PULSE ENERGY 170 µJ 40
REPETITION RATE 1-20 Hz 1-20
WAVELENGTH 337.1 nm 360-950
   
MEASURED WAVELENGTH: 515 nm +/- 10 nm
DETECTORS:

Photomultiplier tubes operate in photon counting mode. High humidity can affect tube performance. A controlled environment is recommended for 40% or greater humidity.
SAMPLE REQUIRED:

1-2 ml
ANALYSIS TIME: 1-3 minutes per sample is typical
SOFTWARE:

The KPA-11 is controlled by KPAWin™ software operating in a Windows® environment by a personal computer. Call for the current recommended PC configuration.
SYSTEM CONTROL PARAMETERS:

A) Number of laser pulses per analysis; 1-9,999
B) Time gate (interval) width; 1µs-4 ms
C) Number of time gates (intervals) used in calculation is 1 to 512.
D) Number of time gates used in calculation is 2-512.
DATA COLLECTION: Photon counts are accumulated for each time gate (interval) for each sample analysis.
DATA PROCESSING:

Intensity Data are corrected for background, variations in laser power and coincidence. Intensity intercepts are calculated by linear least-squares regression. Results are quantified by external or internal calibration.

DATA STORAGE: Raw data, configuration settings, and preferences are stored in a Microsoft® Access database.
DATA EVALUATION:

Quality control and performance criteria are configured by laboratory personnel. Off standard conditions are reported with the interpreted data and alarmed.   
DIMENSIONS 13.6 cm high; 48 cm wide; 53 cm deep
WEIGHT 17 kg (shipping weight 21 kg)

KPAWin Software

Chemchek's KPAWin software controls the operation of the KPA-11 and the storage and manipulation of the analytical data. Click here for more information.